last week a republican lawmaker compared a proposed law to castration. correspondent mike tobin says much of the disagreement boils down to a divide between chicago and the rest of the state. >> on chicago's mean streets, neighborhoods like lawndale and inglewood, gun violence is part of nearly every night. kids are caught in the crossfire. city leaders seized on the emotion of tragedies like the sandy hook elementary school massacre to push for stiffer fun penalties. >> this is an opportunity to push an agenda? >> and connect nationally. this is an american child. >> shots fired. >> chicago leaders are calling for a 3-1/2-year mandatory minimum sentence for illegal gun possession guarantees that convicts won't be released after serving a fraction of the time. >> increasing penalties, and requiring criminals to serve their punishment. we not only protect our children, our families and our communities. but we also prevent retaliatory killings that plague our neighborhoods. >> different sentences will mean more people in illinois prisons. but they are burs